Method of distributing concrete



Nov.- 30 1926. 1,609,025

|:. H. LrcH'rENBERG METHOD 0F DISTRIBUTING CONCRETE Filed March 24. 1922 Asheave 14 ocated Yadjacent to the point of pivotal support of the boom 1. At this point the cable 11 has its end 11"V connected with the drum 9 in the manner previously suggested. The sheaves 12 and 14 are located so that the `portions of the cable 11 passinor over the same are substantially in vertical5 alinement with the axis of rotative movement of the boom 1 established by the vertical pivot 15. The pivot 15 connects the boom l with the bracket 16 projecting'from the frame B of the machine, said bracket formin the main 20 support intermediate the boom an the frame to, ma' which .in Fig. a

work of the` mixer.

Too erate the clutches 7 and 8 a rocker lever 1 (see Fig. 2) is employed, the same being equipped with shifting forks and being mounted upon a vertical shaft 18, seen best The shaft 18 has a main hand lever 19 connected with its lower end and this lever is operable to alternately render the clutches 7 and 8 active for effecting re-A verse movements of the drum 9-and cable 11 kor to maintain the clutches 7 and 8 in neutral positions.

The operation of the drum 9 may ben-re` versed to eect the outward and inward traverse of the carriage 29 on the boom. The carriage 20 has rollers 21 traveling in channels on the beams which comprise the boom. -It suces to state that any suitable mechanism like the shuttle mechanism as illustrated in -my patent 'previously referred beutilizedtotrip the mechanism olds the door closed and rmts of automatic o ning of the same, w ich mechanism inclu es the cam 31 tro-operative with the arm 32 to close the door 34 at the bottom of the. bucket 2. The arm 32 is mounted on a shaft 33 connected' by linkage 35 land a curved link 37 and also arms 38 with-the door 34 aforesaid, all substantially similar to my previous atented construction.

The design `o my bucket 2 and the open able door 34 is especially novel and important. The door 34 is of a'len h correspondto the width. of the ucket 2, and said door is variably limited in its opening movement by means of an adjustable sto 39 which is attached to one side of the carriage 20 and adjustable lengthwise o'f said carriage by means of a suitable bolt passin through thesaid stop. The stop co-acts wit the arm 32 to limit the movement of said arm-in the direction 'of the mixer, as the arm is shifted to throw over action of the arms 38 under the ntluenee of the trip 26. That is to say, the door 34 can open just so far as is determined by the 'movement of the arm 32 in the action of tripping the door 34 'to eeet said openin It is the ad'ustability of the stop 39 which admits of t e flowing or extrusion ofthe concrete a gregates from the bucket 2 in a ribbon-lie stream, the thickness of which deiendsupon the extent of openin of said oor, due to retarded elglrers of t e aggregates as the are extruded t rough the door opening. ecessarily Athe thickness of the stream o materials extruded from the bucket 2 determines the depth of the layer of concrete or aggre. ates dispensed, so to speak, by the bucket. e bucket openingand door 34 are advantageously arranged transversely ot the boom, and of thedirection of travel of the bucket 2, for the at! tainment of the above result of de ositing the plastic4 agg measured` thic ess.

The'bucket 2 is designedly a low discharge bucket; in other words, the dischar e end 'of the bucket is very near the groun so as to admit of the la ing down of the concrete in a 'relatively t in ribbonflike gravitating stream of a width ual to the width of the bucket and of a dept substantially as regulated by adjustment of the stop 39 controlling the operative area of the opening made by release of the door as the latter drops to its-eilective opening position.

From the foregoing, it will be evident that the 'practical and effective operation of a machine'by which my method is practised, and in effect, my method itself inherently inovolves the forming or shaping of the concrete aggregates as they flowA -from the bucket into a rectangular cross section, or the ribbon like form previously referred to herein. Moreover, the said aggregates, by reason of their consistency, malntain such form, substantially, after they are extruded from the bucket through its 'narrow long opening ates in a layer or r1 bon of and whilev above the subgrade, and retain substantially this form as the sub rade itself. Again, it is c ear that the mac inery with which I practise my method, im arts to the bucket 2, and mass therein, a orizontal movement, or movement .sub-

stantially parallel with the subgrade whilst' the aggregates are fed out of the bucket. The actual movement ofthe bucket 2 on the boom 1 is, of course, coordinated with the delivery action of the bucket in feeding out the product of plastic concrete so as to enable the desired ribbon-like form thereof to be established.

Concernin the ribbon of concrete which is delivered y the bucket, itis notable that the-larger dimension of the same is transreach the lli) verse to the line of travel or movement of the bucket itself.v

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. The process of "making concrete roads, which consists in extruding while above the ground plastic ribbon of concrete of thoroughly mixed wet and dry-aggregates. of such a consistency that it will lay on the ground in substantially the same cross-sectional shape as it proceeds from the extruding means, and extending the ribbon at a rate of movement that it will 'preserve substantially the thickness in which it is extruded and independently of any mechanical flattening action thereon after reaching the subgrade, as it is laid on a subgrade.

2. The process of making concrete roads, which consists in moving a thoroughly mixed mass of wet and dry aggregates of such consistency as will hold a shape im parted thereto, over a su-bgrade in spaced relation to the latter, causing the concrete of such mass to be extruded in a plastic ribbon which will'retain substantially the form of its extrusion while above the subgrade and as it is laid on the subgrade, and utilizing tlie movement of the mass to extend the ribbon so that it will pass to and cover the subgrade in substantially the thickness of its extrusion. Y

3. The method of making pavement of plastic concrete comprising a thoroughly mixed mass of 'dry and wet aggregates, which consists in imparting` to such a mass of concrete in plastic state, a movement substantially parallel with and above a subgrade extruding the aggregates of such mass at a point above the subgrade to form them into plastic ribbon having a rectangular cross-section whose longer dimension is transverse tothe line of movement of the mass, and deliverin the ribbon to a subgrade in substantialy the formed cross-section aforesaid.

4. The method of making pavement of plastic concrete comprising a mixed mass of wet and dry aggregates, which consists in disposing such a mass of concrete above a subgrade in such a quantity as will provide a gravity head for extruding the mass through a restricted opening, extruding such mass through a restricted opening giving thereto a substantially ribbon-like shape as it is extruded, and moving the mass above and substantially parallel with the subgrade, during the process of extrusion, at a rate of speed such as Will extend the ribbon so that it will pass to and onto the subgrade in substantially the condition in which it is extruded through the restricted opening and independently of any mechanical flattening action thereon after reaching the subgrade.

In testimony whereof I athx my signature.

ERICH H. LICHTEN BERG.

l. The process ofmaking concrete roads, which consists in extruding While above the ground plastic ribbon of concrete of thoroughly mixed wet and diy aggregates, of such a consistency that it will lay on the ground in substantially the same cross-sectional shape as it proceeds from the extruding means, and extending the ribbon at a rate of movement that it will preserve substantially the thickness in which it is extruded and independently of any mechanical flattening action thereon after reaching the subgrade, as it is laid on a subgrade.

2. The process of making concrete roads, which consists in moving a thoroughly mixed mass of wet and dry aggregates of such consistency as will hold a shape iinparted thereto, over a subgrade in spaced relation to the latter, causing the concrete of such mass to he extruded in a plastic ribbon which will retain substantially the form of its extrusion while above the subgrade and as it is laid on the subgrade, and utilizing the movement of the mass to extend the ribbon so that it will pass to and cover the subgrade in substantially the thickness of its extrusion.

3. The method of making pavement of plastic concrete comprising a thoroughly mixed mass of dry and wet aggregates, which consists in imparting to such a mass of concrete in plastic state, a movement substantially' parallel with and above a subgrade extruding the aggregates of such mass at a point above the subgrade to form them into plastic ribbon having a rectangular cross-section whose longer dimension is transverse tothe line of movement of the mass, and delivering the ribbon to a subgrade in substantially the formed cross-section aforesaid.

4. The method of making pavement ot' plastic concrete comprising a mixed mass of wet and dry aggregates, which consists in disposing such a mass of concrete above a subgrade in such a quantity as will provide a gravity head for extruding the mass through a restricted opening, extruding such mass through a restricted opening giving thereto a substantially ribbon-like shape as it is extruded, and moving the mass above and substantially parallel with the subgradc, during the process of extrusion, at a rate of speed such as will extend the ribbon so that it will pass to and onto the subgrade in substantially the condition in which it is extruded through the restricted opening and independently of any mechanical flattening action thereon after reaching the subgrade.

In testimony whereof I ailix my signature.

ERICH H. LICHTENBERG.

Certificate of Correction.

It is hereby certified that in Letters Patent No. 1,609,025,1'ranted November 30,

1926, upon the application of Erich H. Lichtenberg, of

lwaukee. Wisconsin,

for an improvement in Methods of Distributing Concreteferrors appear in the printed specification requiring correction as follows: Page 1, in the heading the printed specitication, line 6, strike out the Application filed l clause and insert instead Original application filed July 1.9, 1.920, Serial No. 397,431. this application #Zed March 24, 1.022. Serial N0.

Divided and 546,274.; same page, line 37,

beginning with the .word gravitate, strike out all to and including the word laid, line 41, and insert instead we extruded from a bucket containing a mass thereof and gramtate to the surface on ywhich they are to be laid;

page 3. line 3,

claim 1, before the word plastic insert the article a; and that the said'Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Otiice.

Signed and sealed this 28th day of December, A. D. 1926.

[SML] M. J. MOORE, Acting Gommissoner of Patents.

Certieate of Correction.

It is hereby certified that in Letters Patent No. 1,609,025, ted November 30, 1926, upon the application of Erich H. Lichtenberg, of maukee. Wisconsin,

r an improvement in Methods of Distributing Concrete, errors appear in the printed specification requiring correction as follows: Page 1, in the headin to the printed peciication, line 6, strike out the A plication filed clnuse ln insert Instead riginal applicqton fled .July 19, 19 Serial No. 897,181. Divided and this application filed March 24, 19.99. Serial No. 546,873.; same age, line 37, beginni with the .word gravitate, strike out 4all to and inclu ng the word laid me 41, and insert instead bre extruded from a bucket containing a mass thereof and gravitate to the surfa an which they are to be laid; page 3, line 3, claim 1, before the word plastic insert the article a; and that the said Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Oce.

Signed and sealed this 28th day of December, A. D. 1926.

[mL-1 M. J. MOORE,

Anti/ng anunoner of Poteau. 

